/Engine/Source/Editor/Sequencer/Public/SequencerChannelTraits.h
Retrieve a channel's external value, and add it to the channel as a new key (or update an existing key with its value)
(Optional) A handle to the added (or updated) key
namespace Sequencer { template<typename ChannelType, typename ValueType> [TOptional](API\Runtime\Core\IO\TOptional)< [FKeyHandle](API\Runtime\Engine\Curves\FKeyHandle) > Sequencer::AddKeyForExternalValue ( ChannelType * InChannel, const [TMovieSceneExternalValue](API\Runtime\MovieScene\Channels\TMovieSceneExternalValue)< ValueType > & InExternalValue, [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) InTime, [ISequencer](API\Editor\Sequencer\ISequencer) & InSequencer, const [FGuid](API\Runtime\Core\Misc\FGuid) & InObjectBindingID, [FTrackInstancePropertyBindings](API\Runtime\MovieScene\FTrackInstancePropertyBindings) * InPropertyBindings ) }